That is my greatest hate - spending good money to have a "professional" ruin the job.
My Mazda had an oil leak from the head gasket - needed a new gasket ,but could have had warping. He said that it had a slight warp and took a "light cut" off it. Then the valves kept hitting the pistons
Had to sell the car.

__________________
Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior


Various parts cars including 280E, 230C & 300D in various states of disassembly.